TInyOS 1.x Generating an error when compiling BLINK

Question

root@everton-laptop:/opt/tinyos-1.x/apps/Blink# make pc

compiling Blink to a pc binary

ncc -o build/pc/main.exe -g -O0 -board=micasb -pthread -target=pc  -Wall -Wshadow    -DDEF_TOS_AM_GROUP=0x7d -Wnesc-all -fnesc-nido-tosnodes=1000 -fnesc-cfile=build/pc/app.c Blink.nc -lm 

In file included from /opt/tinyos-1.x/tos/platform/pc/packet_sim.h:55,
                 from /opt/tinyos-1.x/tos/platform/pc/nido.h:81,
                 from /opt/tinyos-1.x/tos/platform/pc/hardware.h:43,
                 from /opt/tinyos-1.x/tos/system/tos.h:144:
/opt/tinyos-1.x/tos/types/AM.h:155: parse error before `struct'
/opt/tinyos-1.x/tos/types/AM.h:156: parse error before `struct'
/opt/tinyos-1.x/tos/types/AM.h:158: parse error before `struct'
/opt/tinyos-1.x/tos/types/AM.h: In function `TOS_MsgLength':
/opt/tinyos-1.x/tos/types/AM.h:186: parse error before `TOS_Msg'
In file included from /opt/tinyos-1.x/tos/platform/pc/hardware.h:116,
                 from /opt/tinyos-1.x/tos/system/tos.h:144:
/opt/tinyos-1.x/tos/platform/pc/eeprom.c: At top level:
/opt/tinyos-1.x/tos/platform/pc/eeprom.c:115: warning: declaration of `length' shadows global declaration
/opt/tinyos-1.x/tos/types/AM.h:158: warning: location of shadowed declaration
/opt/tinyos-1.x/tos/platform/pc/eeprom.c:145: warning: declaration of `length' shadows global declaration
/opt/tinyos-1.x/tos/types/AM.h:158: warning: location of shadowed declaration
make: *** [build/pc/main.exe] Error 1

Tried compiling BLink and i keep getting the above error and not sure what to do next. any help would be nice .

Answer 1

Looking at the CVS repository for tos/types/AM.h, it looks like it's choking on the following code:

154: enum {
155:    MSG_DATA_SIZE = offsetof(struct TOS_Msg, crc) + sizeof(uint16_t), // 36 by default
156:    TINYSEC_MSG_DATA_SIZE = offsetof(struct TinySec_Msg, mac) + TINYSEC_MAC_LENGTH, // 41 by default
157:    DATA_LENGTH = TOSH_DATA_LENGTH,
158:    LENGTH_BYTE_NUMBER = offsetof(struct TOS_Msg, length) + 1,
159:    TINYSEC_NODE_ID_SIZE = sizeof(uint16_t)
160: };

The common item from lines 155, 156, and 158 are the offsetof() macro, which should be defined in stddef.h and which looks like should have been brought in by the tos.h before it causes AM.h to be included, so offsetof() should already be defined.

You might want to verify whether or not the compiler you're using has offsetof() properly defined and/or why it's not available for use in AM.h. If necessary, you can probably define it yourself using a more or less usual implementation:

#define offsetof(st, m) ((size_t) ( (char *)&((st *)(0))->m - (char *)0 ))  // stolen from Wikipedia